【摘要】 数字资源的价值是用户使用所获得的受益。数字资源保存价值与用户需求、数字资源半衰期、数字资源保存采用的软硬件技术、长期保存策略的选择等因素有关。基于保存价值难以常规度量的一种测度方法是"负面受益"表示,基于未来保存价值难以确定的一种保存策略是"购买时间"策略。学术型数字资源和研究数据型数字资源的保存价值体现既有共性,也有差异。更多还原

【Abstract】 Value for digital resource is the benefit obtained by user through using digital resource.Preservation value has relation with user’s demand,half life for digital resource,software and hardware technology for digital preservation,and the choice for long-term preservation strategy.Negative benefit expression is a usual measuring method based on the difficulty for measuring preservation value.Purchasing time strategy is a preservation strategy based on difficulty for determining preservation value.There are both commonness and difference on preservation value expression for two types of scholarly digital resources and research datadigital resources.更多还原